Open AccessCREATION OF PORTABLE DOWNHOLE HAMMERS FOR ROTARY-PERCUSSIVE DRILLING OF BOREHOLES
Author(s) -
Sergey E. Alexeev,
B. Kubanychbek,
Alexander Yu. Primychkin
Publication year - 2021
Publication title -
interèkspo geo-sibirʹ
Language(s) - English
Resource type - Journals
ISSN - 2618-981X
DOI - 10.33764/2618-981x-2021-2-3-98-106
Subject(s) - hammer , borehole , drilling , petroleum engineering , measurement while drilling , scope (computer science) , engineering , geology , coal mining , coal , mining engineering , marine engineering , mechanical engineering , geotechnical engineering , computer science , programming language , waste management
This paper presents the design of portable downhole hammers for borehole diameters of 43 and 76 mm when drilling with a combined rotary-percussive method in coal mines. The scope of use is described. Features and advantages of prototypes are shown. The characteristics of DHH and research data are given. The conditions of production tests and operating results are described.